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G. W. IVIALLOHY. LAMP WICK ADJUSTING DEVICE.

APPLICATION FILED IULY'I, IBIS.

Patented Auw. 15, 1916.

IMIWI'IIII I 506111 TDF.

GEORGE W. MALLORY, OF BLENHEIM, ONTARIO, CANADA.

LAMP-WICK-ADJUSTING DEVICE.

Specification of Letters Patent.

Patented Aug. i5, i916.

Application filed July 1, 1915. Serial No. 37,418.

To all whom t may concern.:

Be it known that I, GEORGE W. MALLORY, a subject of the King of GreatBritain and Ireland, residing at Blenheim, in the Province of Ontarioand Dominion of Canada, have invented certain new and usefulImprovements in Lamp-Wick-Adjusting Devices, of which the following is aspecification, reference being had therein to the accompanying drawings.

The invention relates to wick burners, such as are used on lamps, andhaving more particular reference to that type using mantles. It isessential to the proper operation that the wicks should be accuratelyadjusted, being neither too high nor too low, but it is difficult forthe ordinary user to secure this exact adjustment. This is partly due tothe fact that after lighting there is a tendency for the flame to run upas the burner increases in heat. Also the condition of the wick and theamount of carbon present alters the operation.

To overcome the difficulties as above set forth, I have devised aconstruction of wickadjusting device in which the amount of movement islimited by stops. This permits of lowering the wick to turn out thelight, and of raising the wick again to exactly the same position.Inasmuch, however, as the increasing carbonized portion of the wick willalter the flame, I have further provided means for compensating for thisby an additional adjustment. Thus, the operator is enabled to positivelyset the wick in a position where it will produce the right Haine, andmay adjust the same to compensate for the burnt portion without theexercise of skill.

In the drawings: Figure 1 is a perspective view of a lamp burner towhich my improvement is applied; Fig. 2 is a side elevation thereof; andFig. 3 is a section on line a-m Fig. 2.

A is a lamp burner of any suitable construction, and B is the rotatablestem for raising and lowering the wick. The mechanism operated by thestem may be of any suitable construction, and illustration of the sameis therefore omitted from the drawings.

C is the wheel or knob at the end of the stem B used for adjusting thesame. This is preferably formed with a fiange D which is internallynotched or serrated as indicated at E.

F and F are stops, preferably secured to and projecting from the burnerA, and arranged to coperatie with a finger G on the stem B, so as tolimit the rotary movement of the latter. The finger G is not, however,immovably attached to the stem B but is adjustable thereon, preferablyby a second finger H formed integral therewith, which projects intoproximity to the fiange D and engages the serrations thereof. Thus, whenthe wheel C is turned the linger G will be moved against one or theother of the stops F and F which will indicate the limit of movement,but if it is desired to make further adjustment the rotation of thewheel may be continued,4 the finger H operating as a ratchet in theserrations E.

By means of the simple construction just described, the movement of thewick may be accurately controlled. Thus, in first engaging the wick, thewheel C may be rapidly turned to raise the wick to the proper height,the finger H slipping over the serrations E. The wick is then lightedand the proper position is determined by experimentation where the flameis of the required height when the burner is fully warmed. When thisadjustment is once secured the burner may be turned off and turned on asfrequently as desired, and each time that it is turned on the finger Gengaging the stop F will exactly limit the height. It may also bedetermined by experimentation just the amount of carbonization thattakes place for a definite time of burning. The operator may then adjustthe wheel C in relation to the finger H one or more notches each day oreach week to compensate for the carbonization. The second stop whichlimits the downward movement of the wick is also useful for determiningthe amount of trimming, so that by trimming the wick fiush with the topof the burner when in its downturned position there will be the properamount of carbon remaining for best operation.

My improvement is exceedingly simple to manufacture, and lif desired thefingers G and H may beformed from a single stamping having integral lugsT and I which are turned over the stem B to form the securing means. Thestops F and F may be formed either by attached lugs or struck-outportions and the wheel C can also be formed as a stamping. l do not,however, limit myself to this exact construction, as it is obvious thatvarious modifications may be made, all of which come Within the spiritof my invention.

Vhat I claim as my invention is 1. The combination With aWick-adjustingstem, of a Wheel on said stem for rotating the same, formed with aflange having internal serrations thereon, a member rotatably mounted onsaid stem having a linger engaging said-serrations, and stops forlimiting the angular adjustment of said rotatably mounted member 1nopposite directions of v rotation, said linger being resilient, wherebysaid stem may be rotated relative to the rotatably mounted member.

2. The combination With a Wick-adjusting stem7 of a Wheel on said stemfor rotating Copies of this patent may be obtained for five cents each,by addressing the Commissioner of Patents,

Washington, I). C.

